Repeat yourself. It’s that simple.
Sure, there’s a bunch of important stuff to say, but really you could probably spit out the most important stuff in a couple minutes.
Then, tomorrow, instead of wracking your brain trying to think of something new, something exciting, something groundbreaking to say, just repeat yourself.
If it’s that important the first day, it’ll be that important the next day too.
Sometimes, the hard part, though, is just coming up with something important to say the first day.